/**
* RemoveBinding : remove binding from collision detection on deactivation
*/
void
nsDiskCacheBindery::RemoveBinding(nsDiskCacheBinding * binding)
{
NS_ASSERTION(initialized, "nsDiskCacheBindery not initialized");
if (!initialized) return;
HashTableEntry * hashEntry;
void * key = (void *)(uintptr_t)binding->mRecord.HashNumber();
hashEntry = (HashTableEntry*) PL_DHashTableSearch(&table,
(void*)(uintptr_t) key);
if (!hashEntry) {
NS_WARNING("### disk cache: binding not in hashtable!");
return;
}
if (binding == hashEntry->mBinding) {
if (PR_CLIST_IS_EMPTY(binding)) {
// remove this hash entry
PL_DHashTableRemove(&table,
(void*)(uintptr_t) binding->mRecord.HashNumber());
return;
} else {
// promote next binding to head, and unlink this binding
hashEntry->mBinding = (nsDiskCacheBinding *)PR_NEXT_LINK(binding);
}
}
PR_REMOVE_AND_INIT_LINK(binding);
}
/**
* RemoveBinding : remove binding from collision detection on deactivation
*/
void
nsDiskCacheBindery::RemoveBinding(nsDiskCacheBinding * binding)
{
NS_ASSERTION(initialized, "nsDiskCacheBindery not initialized");
if (!initialized) return;
HashTableEntry * hashEntry;
void * key = (void *)binding->mRecord.HashNumber();
hashEntry = (HashTableEntry*) PL_DHashTableOperate(&table,
(void*) key,
PL_DHASH_LOOKUP);
if (!PL_DHASH_ENTRY_IS_BUSY(hashEntry)) {
NS_WARNING("### disk cache: binding not in hashtable!");
return;
}
if (binding == hashEntry->mBinding) {
if (PR_CLIST_IS_EMPTY(binding)) {
// remove this hash entry
(void) PL_DHashTableOperate(&table,
(void*) binding->mRecord.HashNumber(),
PL_DHASH_REMOVE);
return;
} else {
// promote next binding to head, and unlink this binding
hashEntry->mBinding = (nsDiskCacheBinding *)PR_NEXT_LINK(binding);
}
}
PR_REMOVE_AND_INIT_LINK(binding);
}
nsresult
nsMemoryCacheDevice::OnDataSizeChange( nsCacheEntry * entry, int32_t deltaSize)
{
if (entry->IsStreamData()) {
// we have the right to refuse or pre-evict
uint32_t newSize = entry->DataSize() + deltaSize;
if (EntryIsTooBig(newSize)) {
#ifdef DEBUG
nsresult rv =
#endif
nsCacheService::DoomEntry(entry);
NS_ASSERTION(NS_SUCCEEDED(rv),"DoomEntry() failed.");
return NS_ERROR_ABORT;
}
}
// adjust our totals
mTotalSize += deltaSize;
if (!entry->IsDoomed()) {
// move entry to the tail of the appropriate eviction list
PR_REMOVE_AND_INIT_LINK(entry);
PR_APPEND_LINK(entry, &mEvictionList[EvictionList(entry, deltaSize)]);
}
EvictEntriesIfNecessary();
return NS_OK;
}
nsresult
nsMemoryCacheDevice::BindEntry(nsCacheEntry * entry)
{
if (!entry->IsDoomed()) {
NS_ASSERTION(PR_CLIST_IS_EMPTY(entry),"entry is already on a list!");
// append entry to the eviction list
PR_APPEND_LINK(entry, &mEvictionList[EvictionList(entry, 0)]);
// add entry to hashtable of mem cache entries
nsresult rv = mMemCacheEntries.AddEntry(entry);
if (NS_FAILED(rv)) {
PR_REMOVE_AND_INIT_LINK(entry);
return rv;
}
// add size of entry to memory totals
++mEntryCount;
if (mMaxEntryCount < mEntryCount) mMaxEntryCount = mEntryCount;
mTotalSize += entry->DataSize();
EvictEntriesIfNecessary();
}
return NS_OK;
}
PRBool
nsCacheEntry::RemoveRequest(nsCacheRequest * request)
{
// XXX if debug: verify this request belongs to this entry
PR_REMOVE_AND_INIT_LINK(request);
// return true if this entry should stay active
return !((PR_CLIST_IS_EMPTY(&mRequestQ)) &&
(PR_CLIST_IS_EMPTY(&mDescriptorQ)));
}
/*
* timer worker thread function
*/
static void timer_wstart(void *arg)
{
PRThreadPool *tp = (PRThreadPool *) arg;
PRCList *qp;
PRIntervalTime timeout;
PRIntervalTime now;
/*
* call PR_WaitCondVar with minimum value of all timeouts
*/
while (!tp->shutdown) {
PRJob *jobp;
PR_Lock(tp->timerq.lock);
if (PR_CLIST_IS_EMPTY(&tp->timerq.list)) {
timeout = PR_INTERVAL_NO_TIMEOUT;
} else {
PRCList *qp;
qp = tp->timerq.list.next;
jobp = JOB_LINKS_PTR(qp);
timeout = jobp->absolute - PR_IntervalNow();
if (timeout <= 0)
timeout = PR_INTERVAL_NO_WAIT; /* already timed out */
}
if (PR_INTERVAL_NO_WAIT != timeout)
PR_WaitCondVar(tp->timerq.cv, timeout);
if (tp->shutdown) {
PR_Unlock(tp->timerq.lock);
break;
}
/*
* move expired-timer jobs to jobq
*/
now = PR_IntervalNow();
while (!PR_CLIST_IS_EMPTY(&tp->timerq.list)) {
qp = tp->timerq.list.next;
jobp = JOB_LINKS_PTR(qp);
if ((PRInt32)(jobp->absolute - now) > 0) {
break;
}
/*
* job timed out
*/
PR_REMOVE_AND_INIT_LINK(&jobp->links);
tp->timerq.cnt--;
jobp->on_timerq = PR_FALSE;
add_to_jobq(tp, jobp);
}
PR_Unlock(tp->timerq.lock);
}
}
/**
* returns a string containing all the parameters in the ConfigStore hash set in the
* format key1=value1&&key2=value2&& ...
* The list will be lexically ordered by parameter key values.
* The string needs to be freed by the caller.
**/
TPS_PUBLIC const char* ConfigStore::GetOrderedList()
{
char *outstr = NULL;
char *new_string = NULL;
PRCList order_list;
PR_INIT_CLIST(&order_list);
PR_Lock(m_lock);
PL_HashTableEnumerateEntries(m_root->getSet(), &OrderLoop, &order_list);
PR_Unlock(m_lock);
PRCList *current = PR_LIST_HEAD(&order_list);
PRCList *next;
outstr = (char*) PR_Malloc(128);
int allocated = 128;
int needed = 0;
PR_snprintf(outstr, 128, "");
while (current != &order_list) {
OrderedEntry_t *entry = (OrderedEntry_t *) current;
const char *value = GetConfigAsString(entry->key, "");
if ((entry != NULL) && (entry->key != NULL)) {
needed = PL_strlen(outstr) + PL_strlen(entry->key) + PL_strlen(value) + 4;
if (allocated <= needed) {
while (allocated <= needed) {
allocated = allocated * 2;
}
new_string = (char *)PR_Malloc(allocated);
PR_snprintf(new_string, allocated, "%s", outstr);
PR_Free(outstr);
outstr = new_string;
}
PL_strcat(outstr, entry->key);
PL_strcat(outstr, "=");
PL_strcat(outstr, value);
// free the memory for the Ordered Entry
PL_strfree(entry->key);
}
next = PR_NEXT_LINK(current);
PR_REMOVE_AND_INIT_LINK(current);
if (current != NULL) {
PR_Free(current);
}
current = next;
if (current != &order_list) PL_strcat(outstr, "&&");
}
return outstr;
}
PR_IMPLEMENT(PRRecvWait*) PR_CancelWaitGroup(PRWaitGroup *group)
{
PRRecvWait **desc;
PRRecvWait *recv_wait = NULL;
if (PR_FAILURE == MW_Init())
{
PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
return NULL;
}
if (NULL == group) group = mw_state->group;
PR_ASSERT(NULL != group);
if (NULL == group)
{
PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
return NULL;
}
PR_Lock(group->ml);
if (_prmw_stopped != group->state)
{
if (_prmw_running == group->state)
group->state = _prmw_stopping; /* so nothing new comes in */
if (0 == group->waiting_threads) /* is there anybody else? */
group->state = _prmw_stopped; /* we can stop right now */
while (_prmw_stopped != group->state)
(void)PR_WaitCondVar(group->mw_manage, PR_INTERVAL_NO_TIMEOUT);
/* make all the existing descriptors look done/interrupted */
for (desc = &group->waiter->recv_wait; group->waiter->count > 0; ++desc)
{
if (NULL != *desc)
_MW_DoneInternal(group, desc, PR_MW_INTERRUPT);
}
PR_NotifyAllCondVar(group->new_business);
}
/* take first element of finished list and return it or NULL */
if (PR_CLIST_IS_EMPTY(&group->io_ready))
PR_SetError(PR_GROUP_EMPTY_ERROR, 0);
else
{
PRCList *head = PR_LIST_HEAD(&group->io_ready);
PR_REMOVE_AND_INIT_LINK(head);
recv_wait = (PRRecvWait*)head;
}
PR_Unlock(group->ml);
return recv_wait;
} /* PR_CancelWaitGroup */
nsCacheEntry *
nsMemoryCacheDevice::FindEntry(nsCString * key, bool *collision)
{
mozilla::Telemetry::AutoTimer<mozilla::Telemetry::CACHE_MEMORY_SEARCH_2> timer;
nsCacheEntry * entry = mMemCacheEntries.GetEntry(key);
if (!entry) return nullptr;
// move entry to the tail of an eviction list
PR_REMOVE_AND_INIT_LINK(entry);
PR_APPEND_LINK(entry, &mEvictionList[EvictionList(entry, 0)]);
mInactiveSize -= entry->DataSize();
return entry;
}
void
nsCacheEntry::DetachDescriptors(void)
{
nsCacheEntryDescriptor * descriptor =
(nsCacheEntryDescriptor *)PR_LIST_HEAD(&mDescriptorQ);
while (descriptor != &mDescriptorQ) {
nsCacheEntryDescriptor * nextDescriptor =
(nsCacheEntryDescriptor *)PR_NEXT_LINK(descriptor);
descriptor->ClearCacheEntry();
PR_REMOVE_AND_INIT_LINK(descriptor);
descriptor = nextDescriptor;
}
}
PRBool
nsCacheEntry::RemoveDescriptor(nsCacheEntryDescriptor * descriptor)
{
NS_ASSERTION(descriptor->CacheEntry() == this, "### Wrong cache entry!!");
PR_REMOVE_AND_INIT_LINK(descriptor);
descriptor->ClearCacheEntry();
if (!PR_CLIST_IS_EMPTY(&mDescriptorQ))
return PR_TRUE; // stay active if we still have open descriptors
if (PR_CLIST_IS_EMPTY(&mRequestQ))
return PR_FALSE; // no descriptors or requests, we can deactivate
return PR_TRUE; // find next best request to give a descriptor to
}
void
nsMemoryCacheDevice::EvictEntry(nsCacheEntry * entry, bool deleteEntry)
{
CACHE_LOG_DEBUG(("Evicting entry 0x%p from memory cache, deleting: %d\n",
entry, deleteEntry));
// remove entry from our hashtable
mMemCacheEntries.RemoveEntry(entry);
// remove entry from the eviction list
PR_REMOVE_AND_INIT_LINK(entry);
// update statistics
int32_t memoryRecovered = (int32_t)entry->DataSize();
mTotalSize -= memoryRecovered;
if (!entry->IsDoomed())
mInactiveSize -= memoryRecovered;
--mEntryCount;
if (deleteEntry) delete entry;
}
nsresult
nsCacheEntry::CreateDescriptor(nsCacheRequest * request,
nsCacheAccessMode accessGranted,
nsICacheEntryDescriptor ** result)
{
NS_ENSURE_ARG_POINTER(request && result);
nsCacheEntryDescriptor * descriptor =
new nsCacheEntryDescriptor(this, accessGranted);
// XXX check request is on q
PR_REMOVE_AND_INIT_LINK(request); // remove request regardless of success
if (descriptor == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
PR_APPEND_LINK(descriptor, &mDescriptorQ);
NS_ADDREF(*result = descriptor);
return NS_OK;
}
nsresult
nsMemoryCacheDevice::Shutdown()
{
NS_ASSERTION(mInitialized, "### attempting shutdown while not initialized");
NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
mMemCacheEntries.Shutdown();
// evict all entries
nsCacheEntry * entry, * next;
for (int i = kQueueCount - 1; i >= 0; --i) {
entry = (nsCacheEntry *)PR_LIST_HEAD(&mEvictionList[i]);
while (entry != &mEvictionList[i]) {
NS_ASSERTION(!entry->IsInUse(), "### shutting down with active entries");
next = (nsCacheEntry *)PR_NEXT_LINK(entry);
PR_REMOVE_AND_INIT_LINK(entry);
// update statistics
int32_t memoryRecovered = (int32_t)entry->DataSize();
mTotalSize -= memoryRecovered;
mInactiveSize -= memoryRecovered;
--mEntryCount;
delete entry;
entry = next;
}
}
/*
* we're not factoring in changes to meta data yet...
* NS_ASSERTION(mTotalSize == 0, "### mem cache leaking entries?");
*/
NS_ASSERTION(mInactiveSize == 0, "### mem cache leaking entries?");
NS_ASSERTION(mEntryCount == 0, "### mem cache leaking entries?");
mInitialized = false;
return NS_OK;
}
void
nsCacheEntry::DetachDescriptors(void)
{
nsCacheEntryDescriptor * descriptor =
(nsCacheEntryDescriptor *)PR_LIST_HEAD(&mDescriptorQ);
while (descriptor != &mDescriptorQ) {
nsCacheEntryDescriptor * nextDescriptor =
(nsCacheEntryDescriptor *)PR_NEXT_LINK(descriptor);
// Doom entry if something bad happens while closing. See bug #673543
// Errors are handled different from RemoveDescriptor because this
// method is only called from ClearDoomList (in which case the entry is
// doomed anyway) and ClearActiveEntries (in which case we are shutting
// down and really want to get rid of the entry immediately)
if (NS_FAILED(descriptor->CloseOutput()))
nsCacheService::DoomEntry(this);
descriptor->ClearCacheEntry();
PR_REMOVE_AND_INIT_LINK(descriptor);
descriptor = nextDescriptor;
}
}
bool
nsCacheEntry::RemoveDescriptor(nsCacheEntryDescriptor * descriptor)
{
NS_ASSERTION(descriptor->CacheEntry() == this, "### Wrong cache entry!!");
nsresult rv = descriptor->CloseOutput();
if (rv == NS_BASE_STREAM_WOULD_BLOCK)
return true;
descriptor->ClearCacheEntry();
PR_REMOVE_AND_INIT_LINK(descriptor);
// Doom entry if something bad happens while closing. See bug #673543
if (NS_FAILED(rv))
nsCacheService::DoomEntry(this);
if (!PR_CLIST_IS_EMPTY(&mDescriptorQ))
return true; // stay active if we still have open descriptors
if (PR_CLIST_IS_EMPTY(&mRequestQ))
return false; // no descriptors or requests, we can deactivate
return true; // find next best request to give a descriptor to
}
PR_IMPLEMENT(PRRecvWait*) PR_CancelWaitGroup(PRWaitGroup *group)
{
PRRecvWait **desc;
PRRecvWait *recv_wait = NULL;
#ifdef WINNT
_MDOverlapped *overlapped;
PRRecvWait **end;
PRThread *me = _PR_MD_CURRENT_THREAD();
#endif
if (NULL == group) group = mw_state->group;
PR_ASSERT(NULL != group);
if (NULL == group)
{
PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
return NULL;
}
PR_Lock(group->ml);
if (_prmw_stopped != group->state)
{
if (_prmw_running == group->state)
group->state = _prmw_stopping; /* so nothing new comes in */
if (0 == group->waiting_threads) /* is there anybody else? */
group->state = _prmw_stopped; /* we can stop right now */
else
{
PR_NotifyAllCondVar(group->new_business);
PR_NotifyAllCondVar(group->io_complete);
}
while (_prmw_stopped != group->state)
(void)PR_WaitCondVar(group->mw_manage, PR_INTERVAL_NO_TIMEOUT);
}
#ifdef WINNT
_PR_MD_LOCK(&group->mdlock);
#endif
/* make all the existing descriptors look done/interrupted */
#ifdef WINNT
end = &group->waiter->recv_wait + group->waiter->length;
for (desc = &group->waiter->recv_wait; desc < end; ++desc)
{
if (NULL != *desc)
{
if (InterlockedCompareExchange((LONG *)&(*desc)->outcome,
(LONG)PR_MW_INTERRUPT, (LONG)PR_MW_PENDING)
== (LONG)PR_MW_PENDING)
{
PRFileDesc *bottom = PR_GetIdentitiesLayer(
(*desc)->fd, PR_NSPR_IO_LAYER);
PR_ASSERT(NULL != bottom);
if (NULL == bottom)
{
PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
goto invalid_arg;
}
bottom->secret->state = _PR_FILEDESC_CLOSED;
#if 0
fprintf(stderr, "cancel wait group: closing socket\n");
#endif
if (closesocket(bottom->secret->md.osfd) == SOCKET_ERROR)
{
fprintf(stderr, "closesocket failed: %d\n",
WSAGetLastError());
exit(1);
}
}
}
}
while (group->waiter->count > 0)
{
_PR_THREAD_LOCK(me);
me->state = _PR_IO_WAIT;
PR_APPEND_LINK(&me->waitQLinks, &group->wait_list);
if (!_PR_IS_NATIVE_THREAD(me))
{
_PR_SLEEPQ_LOCK(me->cpu);
_PR_ADD_SLEEPQ(me, PR_INTERVAL_NO_TIMEOUT);
_PR_SLEEPQ_UNLOCK(me->cpu);
}
_PR_THREAD_UNLOCK(me);
_PR_MD_UNLOCK(&group->mdlock);
PR_Unlock(group->ml);
_PR_MD_WAIT(me, PR_INTERVAL_NO_TIMEOUT);
me->state = _PR_RUNNING;
PR_Lock(group->ml);
_PR_MD_LOCK(&group->mdlock);
}
#else
for (desc = &group->waiter->recv_wait; group->waiter->count > 0; ++desc)
{
PR_ASSERT(desc < &group->waiter->recv_wait + group->waiter->length);
if (NULL != *desc)
_MW_DoneInternal(group, desc, PR_MW_INTERRUPT);
}
#endif
/* take first element of finished list and return it or NULL */
if (PR_CLIST_IS_EMPTY(&group->io_ready))
PR_SetError(PR_GROUP_EMPTY_ERROR, 0);
else
{
PRCList *head = PR_LIST_HEAD(&group->io_ready);
PR_REMOVE_AND_INIT_LINK(head);
#ifdef WINNT
overlapped = (_MDOverlapped *)
((char *)head - offsetof(_MDOverlapped, data));
head = &overlapped->data.mw.desc->internal;
if (NULL != overlapped->data.mw.timer)
{
PR_ASSERT(PR_INTERVAL_NO_TIMEOUT
!= overlapped->data.mw.desc->timeout);
CancelTimer(overlapped->data.mw.timer);
}
else
{
PR_ASSERT(PR_INTERVAL_NO_TIMEOUT
== overlapped->data.mw.desc->timeout);
}
PR_DELETE(overlapped);
#endif
recv_wait = (PRRecvWait*)head;
}
#ifdef WINNT
invalid_arg:
_PR_MD_UNLOCK(&group->mdlock);
#endif
PR_Unlock(group->ml);
return recv_wait;
} /* PR_CancelWaitGroup */
/**
* Commits changes to the config file
*/
TPS_PUBLIC int ConfigStore::Commit(const bool backup, char *error_msg, int len)
{
char name_tmp[256], cdate[256], name_bak[256], bak_dir[256];
char basename[256], dirname[256];
PRFileDesc *ftmp = NULL;
PRExplodedTime time;
PRTime now;
PRStatus status;
if (m_cfg_file_path == NULL) {
PR_snprintf(error_msg, len, "ConfigStore::Commit(): m_cfg_file_path is NULL!");
return 1;
}
if (strrchr(m_cfg_file_path, '/') != NULL) {
PR_snprintf((char *) basename, 256, "%s", strrchr(m_cfg_file_path, '/') +1);
PR_snprintf((char *) dirname, PL_strlen(m_cfg_file_path) - PL_strlen(basename), "%s", m_cfg_file_path);
PL_strcat(dirname, '\0');
} else {
PR_snprintf((char *) basename, 256, "%s", m_cfg_file_path);
PR_snprintf((char *) dirname, 256, ".");
}
PR_snprintf(bak_dir, 256, "%s/bak", dirname);
now = PR_Now();
PR_ExplodeTime(now, PR_LocalTimeParameters, &time);
PR_snprintf(cdate, 16, "%04d%02d%02d%02d%02d%02dZ",
time.tm_year, (time.tm_month + 1), time.tm_mday,
time.tm_hour, time.tm_min, time.tm_sec);
PR_snprintf(name_tmp, 256, "%s.%s.tmp", m_cfg_file_path,cdate);
PR_snprintf(name_bak, 256, "%s/%s.%s", bak_dir, basename, cdate);
ftmp = PR_Open(name_tmp, PR_WRONLY| PR_CREATE_FILE, 00400|00200);
if (ftmp == NULL) {
// unable to create temporary config file
PR_snprintf(error_msg, len, "ConfigStore::Commit(): unable to create temporary config file");
return 1;
}
PRCList order_list;
PR_INIT_CLIST(&order_list);
PR_Lock(m_lock);
PL_HashTableEnumerateEntries(m_root->getSet(), &OrderLoop, &order_list);
PR_Unlock(m_lock);
PRCList *current = PR_LIST_HEAD(&order_list);
PRCList *next;
while (current != &order_list) {
OrderedEntry_t *entry = (OrderedEntry_t *) current;
PR_Write(ftmp, entry->key, PL_strlen(entry->key));
PR_Write(ftmp, "=", 1);
const char *value = GetConfigAsString(entry->key, "");
PR_Write(ftmp, value, PL_strlen(value));
PR_Write(ftmp, "\n", 1);
// free the memory for the Ordered Entry
if (entry->key != NULL) PL_strfree(entry->key);
next = PR_NEXT_LINK(current);
PR_REMOVE_AND_INIT_LINK(current);
if (current != NULL) {
PR_Free(current);
}
current = next;
}
PR_Close(ftmp);
if (backup) {
// create the backup directory if it does not exist
if (PR_Access(bak_dir, PR_ACCESS_EXISTS) != PR_SUCCESS) {
PR_MkDir(bak_dir, 00770);
}
status = PR_Rename(m_cfg_file_path, name_bak);
if (status != PR_SUCCESS) {
// failed to back up CS.cfg
}
}
if (PR_Access(m_cfg_file_path, PR_ACCESS_EXISTS) == PR_SUCCESS) {
// backup is false, or backup failed
status = PR_Delete(m_cfg_file_path);
if (status != PR_SUCCESS) {
// failed to delete old CS.cfg file
PR_snprintf(error_msg, len, "ConfigStore::Commit(): unable to delete old CS.cfg file");
return 1;
}
}
status = PR_Rename(name_tmp, m_cfg_file_path);
if (status != PR_SUCCESS) {
// failed to move tmp to CS.cfg
// major badness - we now have only tmp file, no CS.cfg
PR_snprintf(error_msg, len, "ConfigStore::Commit(): failed to move tmp file to CS.cfg");
return 1;
}
return 0;
}
PR_CancelJob(PRJob *jobp) {
PRStatus rval = PR_FAILURE;
PRThreadPool *tp;
if (jobp->on_timerq) {
/*
* now, check again while holding the timerq lock
*/
tp = jobp->tpool;
PR_Lock(tp->timerq.lock);
if (jobp->on_timerq) {
jobp->on_timerq = PR_FALSE;
PR_REMOVE_AND_INIT_LINK(&jobp->links);
tp->timerq.cnt--;
PR_Unlock(tp->timerq.lock);
if (!JOINABLE_JOB(jobp)) {
delete_job(jobp);
} else {
JOIN_NOTIFY(jobp);
}
rval = PR_SUCCESS;
} else
PR_Unlock(tp->timerq.lock);
} else if (jobp->on_ioq) {
/*
* now, check again while holding the ioq lock
*/
tp = jobp->tpool;
PR_Lock(tp->ioq.lock);
if (jobp->on_ioq) {
jobp->cancel_cv = PR_NewCondVar(tp->ioq.lock);
if (NULL == jobp->cancel_cv) {
PR_Unlock(tp->ioq.lock);
PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, 0);
return PR_FAILURE;
}
/*
* mark job 'cancelled' and notify io thread(s)
* XXXX:
* this assumes there is only one io thread; when there
* are multiple threads, the io thread processing this job
* must be notified.
*/
jobp->cancel_io = PR_TRUE;
PR_Unlock(tp->ioq.lock); /* release, reacquire ioq lock */
notify_ioq(tp);
PR_Lock(tp->ioq.lock);
while (jobp->cancel_io)
PR_WaitCondVar(jobp->cancel_cv, PR_INTERVAL_NO_TIMEOUT);
PR_Unlock(tp->ioq.lock);
PR_ASSERT(!jobp->on_ioq);
if (!JOINABLE_JOB(jobp)) {
delete_job(jobp);
} else {
JOIN_NOTIFY(jobp);
}
rval = PR_SUCCESS;
} else
PR_Unlock(tp->ioq.lock);
}
if (PR_FAILURE == rval)
PR_SetError(PR_INVALID_STATE_ERROR, 0);
return rval;
}
static NSFCStatus
_NSFC_DeleteEntry(NSFCCache cache, NSFCEntryImpl *nep,
PRBool hasBucketLock, PRBool delCntIt, PRBool outdCntIt)
{
NSFCStatus rfc = NSFC_OK;
PR_ASSERT(nep);
/* Get access to nep's bucket if caller doesn't have it already */
PRUint32 bucket;
if (hasBucketLock == PR_FALSE) {
if (nep->fDelete) {
return rfc;
}
bucket = nep->hash % cache->hsize;
NSFC_ACQUIREBUCKET(cache, bucket);
} else {
NSFC_ASSERTBUCKETHELD(cache, nep->hash % cache->hsize);
}
/* If nep hasn't already been marked for deletion... */
if (!nep->fDelete) {
/* Remove nep from the hit list */
PR_Lock(cache->hitLock);
PR_REMOVE_AND_INIT_LINK(&nep->hit_list);
PR_Unlock(cache->hitLock);
PR_ASSERT(PR_LIST_HEAD(&nep->hit_list) == PR_LIST_TAIL(&nep->hit_list));
/* Mark it for delete */
nep->fDelete = 1;
/* Increment total count of entries deleted */
if (delCntIt == PR_TRUE) {
PR_AtomicIncrement((PRInt32 *)&cache->delCnt);
PR_AtomicIncrement((PRInt32 *)&cache->busydCnt);
if (outdCntIt == PR_TRUE)
PR_AtomicIncrement((PRInt32 *)&cache->outdCnt);
}
}
if (nep->refcnt == 0) {
/*
* Given that the entry's use count is zero, the caller had better have
* the bucket lock (because he clearly doesn't have a refcnt)
*/
PR_ASSERT(hasBucketLock == PR_TRUE);
_NSFC_DestroyEntry(cache, nep, delCntIt);
}
/* Release the bucket lock if we weren't holding it on entry */
if (hasBucketLock == PR_FALSE) {
NSFC_RELEASEBUCKET(cache, bucket);
}
/* Cache contents have been modified */
cache->sig++;
return rfc;
}
/*
* io worker thread function
*/
static void io_wstart(void *arg)
{
PRThreadPool *tp = (PRThreadPool *) arg;
int pollfd_cnt, pollfds_used;
int rv;
PRCList *qp, *nextqp;
PRPollDesc *pollfds;
PRJob **polljobs;
int poll_timeout;
PRIntervalTime now;
/*
* scan io_jobq
* construct poll list
* call PR_Poll
* for all fds, for which poll returns true, move the job to
* jobq and wakeup worker thread.
*/
while (!tp->shutdown) {
PRJob *jobp;
pollfd_cnt = tp->ioq.cnt + 10;
if (pollfd_cnt > tp->ioq.npollfds) {
/*
* re-allocate pollfd array if the current one is not large
* enough
*/
if (NULL != tp->ioq.pollfds)
PR_Free(tp->ioq.pollfds);
tp->ioq.pollfds = (PRPollDesc *) PR_Malloc(pollfd_cnt *
(sizeof(PRPollDesc) + sizeof(PRJob *)));
PR_ASSERT(NULL != tp->ioq.pollfds);
/*
* array of pollfds
*/
pollfds = tp->ioq.pollfds;
tp->ioq.polljobs = (PRJob **) (&tp->ioq.pollfds[pollfd_cnt]);
/*
* parallel array of jobs
*/
polljobs = tp->ioq.polljobs;
tp->ioq.npollfds = pollfd_cnt;
}
pollfds_used = 0;
/*
* add the notify fd; used for unblocking io thread(s)
*/
pollfds[pollfds_used].fd = tp->ioq.notify_fd;
pollfds[pollfds_used].in_flags = PR_POLL_READ;
pollfds[pollfds_used].out_flags = 0;
polljobs[pollfds_used] = NULL;
pollfds_used++;
/*
* fill in the pollfd array
*/
PR_Lock(tp->ioq.lock);
for (qp = tp->ioq.list.next; qp != &tp->ioq.list; qp = nextqp) {
nextqp = qp->next;
jobp = JOB_LINKS_PTR(qp);
if (jobp->cancel_io) {
CANCEL_IO_JOB(jobp);
continue;
}
if (pollfds_used == (pollfd_cnt))
break;
pollfds[pollfds_used].fd = jobp->iod->socket;
pollfds[pollfds_used].in_flags = jobp->io_poll_flags;
pollfds[pollfds_used].out_flags = 0;
polljobs[pollfds_used] = jobp;
pollfds_used++;
}
if (!PR_CLIST_IS_EMPTY(&tp->ioq.list)) {
qp = tp->ioq.list.next;
jobp = JOB_LINKS_PTR(qp);
if (PR_INTERVAL_NO_TIMEOUT == jobp->timeout)
poll_timeout = PR_INTERVAL_NO_TIMEOUT;
else if (PR_INTERVAL_NO_WAIT == jobp->timeout)
poll_timeout = PR_INTERVAL_NO_WAIT;
else {
poll_timeout = jobp->absolute - PR_IntervalNow();
if (poll_timeout <= 0) /* already timed out */
poll_timeout = PR_INTERVAL_NO_WAIT;
}
} else {
poll_timeout = PR_INTERVAL_NO_TIMEOUT;
}
PR_Unlock(tp->ioq.lock);
/*
* XXXX
* should retry if more jobs have been added to the queue?
*
*/
PR_ASSERT(pollfds_used <= pollfd_cnt);
rv = PR_Poll(tp->ioq.pollfds, pollfds_used, poll_timeout);
if (tp->shutdown) {
break;
}
if (rv > 0) {
/*
* at least one io event is set
*/
PRStatus rval_status;
PRInt32 index;
PR_ASSERT(pollfds[0].fd == tp->ioq.notify_fd);
/*
* reset the pollable event, if notified
*/
if (pollfds[0].out_flags & PR_POLL_READ) {
rval_status = PR_WaitForPollableEvent(tp->ioq.notify_fd);
PR_ASSERT(PR_SUCCESS == rval_status);
}
for(index = 1; index < (pollfds_used); index++) {
PRInt16 events = pollfds[index].in_flags;
PRInt16 revents = pollfds[index].out_flags;
jobp = polljobs[index];
if ((revents & PR_POLL_NVAL) || /* busted in all cases */
(revents & PR_POLL_ERR) ||
((events & PR_POLL_WRITE) &&
(revents & PR_POLL_HUP))) { /* write op & hup */
PR_Lock(tp->ioq.lock);
if (jobp->cancel_io) {
CANCEL_IO_JOB(jobp);
PR_Unlock(tp->ioq.lock);
continue;
}
PR_REMOVE_AND_INIT_LINK(&jobp->links);
tp->ioq.cnt--;
jobp->on_ioq = PR_FALSE;
PR_Unlock(tp->ioq.lock);
/* set error */
if (PR_POLL_NVAL & revents)
jobp->iod->error = PR_BAD_DESCRIPTOR_ERROR;
else if (PR_POLL_HUP & revents)
jobp->iod->error = PR_CONNECT_RESET_ERROR;
else
jobp->iod->error = PR_IO_ERROR;
/*
* add to jobq
*/
add_to_jobq(tp, jobp);
} else if (revents) {
/*
* add to jobq
*/
PR_Lock(tp->ioq.lock);
if (jobp->cancel_io) {
CANCEL_IO_JOB(jobp);
PR_Unlock(tp->ioq.lock);
continue;
}
PR_REMOVE_AND_INIT_LINK(&jobp->links);
tp->ioq.cnt--;
jobp->on_ioq = PR_FALSE;
PR_Unlock(tp->ioq.lock);
if (jobp->io_op == JOB_IO_CONNECT) {
if (PR_GetConnectStatus(&pollfds[index]) == PR_SUCCESS)
jobp->iod->error = 0;
else
jobp->iod->error = PR_GetError();
} else
jobp->iod->error = 0;
add_to_jobq(tp, jobp);
}
}
}
/*
* timeout processing
*/
now = PR_IntervalNow();
PR_Lock(tp->ioq.lock);
for (qp = tp->ioq.list.next; qp != &tp->ioq.list; qp = nextqp) {
nextqp = qp->next;
jobp = JOB_LINKS_PTR(qp);
if (jobp->cancel_io) {
CANCEL_IO_JOB(jobp);
continue;
}
if (PR_INTERVAL_NO_TIMEOUT == jobp->timeout)
break;
if ((PR_INTERVAL_NO_WAIT != jobp->timeout) &&
((PRInt32)(jobp->absolute - now) > 0))
break;
PR_REMOVE_AND_INIT_LINK(&jobp->links);
tp->ioq.cnt--;
jobp->on_ioq = PR_FALSE;
jobp->iod->error = PR_IO_TIMEOUT_ERROR;
add_to_jobq(tp, jobp);
}
PR_Unlock(tp->ioq.lock);
}
}
/*
* worker thread function
*/
static void wstart(void *arg)
{
PRThreadPool *tp = (PRThreadPool *) arg;
PRCList *head;
/*
* execute jobs until shutdown
*/
while (!tp->shutdown) {
PRJob *jobp;
#ifdef OPT_WINNT
BOOL rv;
DWORD unused, shutdown;
LPOVERLAPPED olp;
PR_Lock(tp->jobq.lock);
tp->idle_threads++;
PR_Unlock(tp->jobq.lock);
rv = GetQueuedCompletionStatus(tp->jobq.nt_completion_port,
&unused, &shutdown, &olp, INFINITE);
PR_ASSERT(rv);
if (shutdown)
break;
jobp = ((NT_notifier *) olp)->jobp;
PR_Lock(tp->jobq.lock);
tp->idle_threads--;
tp->jobq.cnt--;
PR_Unlock(tp->jobq.lock);
#else
PR_Lock(tp->jobq.lock);
while (PR_CLIST_IS_EMPTY(&tp->jobq.list) && (!tp->shutdown)) {
tp->idle_threads++;
PR_WaitCondVar(tp->jobq.cv, PR_INTERVAL_NO_TIMEOUT);
tp->idle_threads--;
}
if (tp->shutdown) {
PR_Unlock(tp->jobq.lock);
break;
}
head = PR_LIST_HEAD(&tp->jobq.list);
/*
* remove job from queue
*/
PR_REMOVE_AND_INIT_LINK(head);
tp->jobq.cnt--;
jobp = JOB_LINKS_PTR(head);
PR_Unlock(tp->jobq.lock);
#endif
jobp->job_func(jobp->job_arg);
if (!JOINABLE_JOB(jobp)) {
delete_job(jobp);
} else {
JOIN_NOTIFY(jobp);
}
}
PR_Lock(tp->jobq.lock);
tp->current_threads--;
PR_Unlock(tp->jobq.lock);
}
PR_JoinThreadPool(PRThreadPool *tpool)
{
PRStatus rval = PR_SUCCESS;
PRCList *head;
PRStatus rval_status;
PR_Lock(tpool->jobq.lock);
while (!tpool->shutdown)
PR_WaitCondVar(tpool->shutdown_cv, PR_INTERVAL_NO_TIMEOUT);
/*
* wakeup worker threads
*/
#ifdef OPT_WINNT
/*
* post shutdown notification for all threads
*/
{
int i;
for(i=0; i < tpool->current_threads; i++) {
PostQueuedCompletionStatus(tpool->jobq.nt_completion_port, 0,
TRUE, NULL);
}
}
#else
PR_NotifyAllCondVar(tpool->jobq.cv);
#endif
/*
* wakeup io thread(s)
*/
notify_ioq(tpool);
/*
* wakeup timer thread(s)
*/
PR_Lock(tpool->timerq.lock);
notify_timerq(tpool);
PR_Unlock(tpool->timerq.lock);
while (!PR_CLIST_IS_EMPTY(&tpool->jobq.wthreads)) {
wthread *wthrp;
head = PR_LIST_HEAD(&tpool->jobq.wthreads);
PR_REMOVE_AND_INIT_LINK(head);
PR_Unlock(tpool->jobq.lock);
wthrp = WTHREAD_LINKS_PTR(head);
rval_status = PR_JoinThread(wthrp->thread);
PR_ASSERT(PR_SUCCESS == rval_status);
PR_DELETE(wthrp);
PR_Lock(tpool->jobq.lock);
}
PR_Unlock(tpool->jobq.lock);
while (!PR_CLIST_IS_EMPTY(&tpool->ioq.wthreads)) {
wthread *wthrp;
head = PR_LIST_HEAD(&tpool->ioq.wthreads);
PR_REMOVE_AND_INIT_LINK(head);
wthrp = WTHREAD_LINKS_PTR(head);
rval_status = PR_JoinThread(wthrp->thread);
PR_ASSERT(PR_SUCCESS == rval_status);
PR_DELETE(wthrp);
}
while (!PR_CLIST_IS_EMPTY(&tpool->timerq.wthreads)) {
wthread *wthrp;
head = PR_LIST_HEAD(&tpool->timerq.wthreads);
PR_REMOVE_AND_INIT_LINK(head);
wthrp = WTHREAD_LINKS_PTR(head);
rval_status = PR_JoinThread(wthrp->thread);
PR_ASSERT(PR_SUCCESS == rval_status);
PR_DELETE(wthrp);
}
/*
* Delete queued jobs
*/
while (!PR_CLIST_IS_EMPTY(&tpool->jobq.list)) {
PRJob *jobp;
head = PR_LIST_HEAD(&tpool->jobq.list);
PR_REMOVE_AND_INIT_LINK(head);
jobp = JOB_LINKS_PTR(head);
tpool->jobq.cnt--;
delete_job(jobp);
}
/* delete io jobs */
while (!PR_CLIST_IS_EMPTY(&tpool->ioq.list)) {
PRJob *jobp;
head = PR_LIST_HEAD(&tpool->ioq.list);
PR_REMOVE_AND_INIT_LINK(head);
tpool->ioq.cnt--;
jobp = JOB_LINKS_PTR(head);
delete_job(jobp);
}
/* delete timer jobs */
while (!PR_CLIST_IS_EMPTY(&tpool->timerq.list)) {
PRJob *jobp;
head = PR_LIST_HEAD(&tpool->timerq.list);
PR_REMOVE_AND_INIT_LINK(head);
tpool->timerq.cnt--;
jobp = JOB_LINKS_PTR(head);
delete_job(jobp);
}
PR_ASSERT(0 == tpool->jobq.cnt);
PR_ASSERT(0 == tpool->ioq.cnt);
PR_ASSERT(0 == tpool->timerq.cnt);
delete_threadpool(tpool);
return rval;
}
static void PR_CALLBACK Server(void *arg)
{
PRStatus rv;
PRNetAddr serverAddress;
PRThread *me = PR_GetCurrentThread();
CSServer_t *server = (CSServer_t*)arg;
PRSocketOptionData sockOpt;
server->listener = PR_Socket(domain, SOCK_STREAM, protocol);
sockOpt.option = PR_SockOpt_Reuseaddr;
sockOpt.value.reuse_addr = PR_TRUE;
rv = PR_SetSocketOption(server->listener, &sockOpt);
TEST_ASSERT(PR_SUCCESS == rv);
memset(&serverAddress, 0, sizeof(serverAddress));
if (PR_AF_INET6 != domain)
rv = PR_InitializeNetAddr(PR_IpAddrAny, DEFAULT_PORT, &serverAddress);
else
rv = PR_SetNetAddr(PR_IpAddrAny, PR_AF_INET6, DEFAULT_PORT,
&serverAddress);
rv = PR_Bind(server->listener, &serverAddress);
TEST_ASSERT(PR_SUCCESS == rv);
rv = PR_Listen(server->listener, server->backlog);
TEST_ASSERT(PR_SUCCESS == rv);
server->started = PR_IntervalNow();
TimeOfDayMessage("Server started at", me);
PR_Lock(server->ml);
server->state = cs_run;
PR_NotifyCondVar(server->stateChange);
PR_Unlock(server->ml);
/*
** Create the first worker (actually, a thread that accepts
** connections and then processes the work load as needed).
** From this point on, additional worker threads are created
** as they are needed by existing worker threads.
*/
rv = CreateWorker(server, &server->pool);
TEST_ASSERT(PR_SUCCESS == rv);
/*
** From here on this thread is merely hanging around as the contact
** point for the main test driver. It's just waiting for the driver
** to declare the test complete.
*/
TEST_LOG(
cltsrv_log_file, TEST_LOG_VERBOSE,
("\tServer(0x%p): waiting for state change\n", me));
PR_Lock(server->ml);
while ((cs_run == server->state) && !Aborted(rv))
{
rv = PR_WaitCondVar(server->stateChange, PR_INTERVAL_NO_TIMEOUT);
}
PR_Unlock(server->ml);
PR_ClearInterrupt();
TEST_LOG(
cltsrv_log_file, TEST_LOG_INFO,
("\tServer(0x%p): shutting down workers\n", me));
/*
** Get all the worker threads to exit. They know how to
** clean up after themselves, so this is just a matter of
** waiting for clorine in the pool to take effect. During
** this stage we're ignoring interrupts.
*/
server->workers.minimum = server->workers.maximum = 0;
PR_Lock(server->ml);
while (!PR_CLIST_IS_EMPTY(&server->list))
{
PRCList *head = PR_LIST_HEAD(&server->list);
CSWorker_t *worker = (CSWorker_t*)head;
TEST_LOG(
cltsrv_log_file, TEST_LOG_VERBOSE,
("\tServer(0x%p): interrupting worker(0x%p)\n", me, worker));
rv = PR_Interrupt(worker->thread);
TEST_ASSERT(PR_SUCCESS == rv);
PR_REMOVE_AND_INIT_LINK(head);
}
while (server->pool.workers > 0)
{
TEST_LOG(
cltsrv_log_file, TEST_LOG_NOTICE,
("\tServer(0x%p): waiting for %u workers to exit\n",
me, server->pool.workers));
(void)PR_WaitCondVar(server->pool.exiting, PR_INTERVAL_NO_TIMEOUT);
}
server->state = cs_exit;
PR_NotifyCondVar(server->stateChange);
PR_Unlock(server->ml);
TEST_LOG(
cltsrv_log_file, TEST_LOG_ALWAYS,
("\tServer(0x%p): stopped after %u operations and %u bytes\n",
me, server->operations, server->bytesTransferred));
if (NULL != server->listener) PR_Close(server->listener);
server->stopped = PR_IntervalNow();
} /* Server */
static void PR_CALLBACK Worker(void *arg)
{
PRStatus rv;
PRNetAddr from;
PRFileDesc *fd = NULL;
PRThread *me = PR_GetCurrentThread();
CSWorker_t *worker = (CSWorker_t*)arg;
CSServer_t *server = worker->server;
CSPool_t *pool = &server->pool;
TEST_LOG(
cltsrv_log_file, TEST_LOG_NOTICE,
("\t\tWorker(0x%p): started [%u]\n", me, pool->workers + 1));
PR_Lock(server->ml);
PR_APPEND_LINK(&worker->element, &server->list);
pool->workers += 1; /* define our existance */
while (cs_run == server->state)
{
while (pool->accepting >= server->workers.accepting)
{
TEST_LOG(
cltsrv_log_file, TEST_LOG_VERBOSE,
("\t\tWorker(0x%p): waiting for accept slot[%d]\n",
me, pool->accepting));
rv = PR_WaitCondVar(pool->acceptComplete, PR_INTERVAL_NO_TIMEOUT);
if (Aborted(rv) || (cs_run != server->state))
{
TEST_LOG(
cltsrv_log_file, TEST_LOG_NOTICE,
("\tWorker(0x%p): has been %s\n",
me, (Aborted(rv) ? "interrupted" : "stopped")));
goto exit;
}
}
pool->accepting += 1; /* how many are really in accept */
PR_Unlock(server->ml);
TEST_LOG(
cltsrv_log_file, TEST_LOG_VERBOSE,
("\t\tWorker(0x%p): calling accept\n", me));
fd = PR_Accept(server->listener, &from, PR_INTERVAL_NO_TIMEOUT);
PR_Lock(server->ml);
pool->accepting -= 1;
PR_NotifyCondVar(pool->acceptComplete);
if ((NULL == fd) && Aborted(PR_FAILURE))
{
if (NULL != server->listener)
{
PR_Close(server->listener);
server->listener = NULL;
}
goto exit;
}
if (NULL != fd)
{
/*
** Create another worker of the total number of workers is
** less than the minimum specified or we have none left in
** accept() AND we're not over the maximum.
** This sort of presumes that the number allowed in accept
** is at least as many as the minimum. Otherwise we'll keep
** creating new threads and deleting them soon after.
*/
PRBool another =
((pool->workers < server->workers.minimum) ||
((0 == pool->accepting)
&& (pool->workers < server->workers.maximum))) ?
PR_TRUE : PR_FALSE;
pool->active += 1;
PR_Unlock(server->ml);
if (another) (void)CreateWorker(server, pool);
rv = ProcessRequest(fd, server);
if (PR_SUCCESS != rv)
TEST_LOG(
cltsrv_log_file, TEST_LOG_ERROR,
("\t\tWorker(0x%p): server process ended abnormally\n", me));
(void)PR_Close(fd); fd = NULL;
PR_Lock(server->ml);
pool->active -= 1;
}
}
exit:
PR_ClearInterrupt();
PR_Unlock(server->ml);
if (NULL != fd)
{
(void)PR_Shutdown(fd, PR_SHUTDOWN_BOTH);
(void)PR_Close(fd);
}
TEST_LOG(
cltsrv_log_file, TEST_LOG_NOTICE,
("\t\tWorker(0x%p): exiting [%u]\n", PR_GetCurrentThread(), pool->workers));
PR_Lock(server->ml);
pool->workers -= 1; /* undefine our existance */
PR_REMOVE_AND_INIT_LINK(&worker->element);
PR_NotifyCondVar(pool->exiting);
PR_Unlock(server->ml);
PR_DELETE(worker); /* destruction of the "worker" object */
} /* Worker */
SECStatus
do_accepts(
PRFileDesc *listen_sock,
PRFileDesc *model_sock,
int requestCert
)
{
PRNetAddr addr;
PRErrorCode perr;
#ifdef XP_UNIX
struct sigaction act;
#endif
VLOG(("selfserv: do_accepts: starting"));
PR_SetThreadPriority( PR_GetCurrentThread(), PR_PRIORITY_HIGH);
acceptorThread = PR_GetCurrentThread();
#ifdef XP_UNIX
/* set up the signal handler */
act.sa_handler = sigusr1_handler;
sigemptyset(&act.sa_mask);
act.sa_flags = 0;
if (sigaction(SIGUSR1, &act, NULL)) {
fprintf(stderr, "Error installing signal handler.\n");
exit(1);
}
#endif
while (!stopping) {
PRFileDesc *tcp_sock;
PRCList *myLink;
FPRINTF(stderr, "\n\n\nselfserv: About to call accept.\n");
tcp_sock = PR_Accept(listen_sock, &addr, PR_INTERVAL_NO_TIMEOUT);
if (tcp_sock == NULL) {
perr = PR_GetError();
if ((perr != PR_CONNECT_RESET_ERROR &&
perr != PR_PENDING_INTERRUPT_ERROR) || verbose) {
errWarn("PR_Accept");
}
if (perr == PR_CONNECT_RESET_ERROR) {
FPRINTF(stderr,
"Ignoring PR_CONNECT_RESET_ERROR error - continue\n");
continue;
}
stopping = 1;
break;
}
VLOG(("selfserv: do_accept: Got connection\n"));
PZ_Lock(qLock);
while (PR_CLIST_IS_EMPTY(&freeJobs) && !stopping) {
PZ_WaitCondVar(freeListNotEmptyCv, PR_INTERVAL_NO_TIMEOUT);
}
if (stopping) {
PZ_Unlock(qLock);
if (tcp_sock) {
PR_Close(tcp_sock);
}
break;
}
myLink = PR_LIST_HEAD(&freeJobs);
PR_REMOVE_AND_INIT_LINK(myLink);
/* could release qLock here and reacquire it 7 lines below, but
** why bother for 4 assignment statements?
*/
{
JOB * myJob = (JOB *)myLink;
myJob->tcp_sock = tcp_sock;
myJob->model_sock = model_sock;
myJob->requestCert = requestCert;
}
PR_APPEND_LINK(myLink, &jobQ);
PZ_NotifyCondVar(jobQNotEmptyCv);
PZ_Unlock(qLock);
}
FPRINTF(stderr, "selfserv: Closing listen socket.\n");
VLOG(("selfserv: do_accepts: exiting"));
if (listen_sock) {
PR_Close(listen_sock);
}
return SECSuccess;
}
void
nsIOThreadPool::ThreadFunc(void *arg)
{
nsIOThreadPool *pool = (nsIOThreadPool *) arg;
LOG(("entering ThreadFunc\n"));
{
nsAutoLock lock(pool->mLock);
for (;;) {
PRIntervalTime start = PR_IntervalNow(), timeout = IDLE_TIMEOUT;
//
// wait for one or more of the following to occur:
// (1) the event queue has an event to process
// (2) the shutdown flag has been set
// (3) the thread has been idle for too long
//
// PR_WaitCondVar will return when any of these conditions is true.
//
while (PR_CLIST_IS_EMPTY(&pool->mEventQ) && !pool->mShutdown) {
pool->mNumIdleThreads++;
PR_WaitCondVar(pool->mIdleThreadCV, timeout);
pool->mNumIdleThreads--;
PRIntervalTime delta = PR_IntervalNow() - start;
if (delta >= timeout)
break;
timeout -= delta;
start += delta;
}
// if the queue is still empty, then kill this thread (either we
// are shutting down or the thread exceeded the idle timeout)...
if (PR_CLIST_IS_EMPTY(&pool->mEventQ))
break;
// handle one event at a time: we don't want this one thread to hog
// all the events while other threads may be able to help out ;-)
do {
PLEvent *event = PLEVENT_FROM_LINK(PR_LIST_HEAD(&pool->mEventQ));
PR_REMOVE_AND_INIT_LINK(&event->link);
LOG(("event:%p\n", event));
// release lock!
lock.unlock();
PL_HandleEvent(event);
lock.lock();
}
while (!PR_CLIST_IS_EMPTY(&pool->mEventQ));
}
// thread is going away...
pool->mNumThreads--;
PR_NotifyCondVar(pool->mExitThreadCV);
}
// release our reference to the pool
NS_RELEASE(pool);
LOG(("leaving ThreadFunc\n"));
}
